Capstan



(No Model.) I v 3 Sheets-Sheet 1. v

A. R. YOUNG.

GAPSTAN.

No. 325,143. Patented Aug. 25, 1885.

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(No Model.) 3 Sheets-Sheet 2. A. R. YOUNG.

GAPSTAN.

No. 325,143. Patented Aug. 25, 1885.

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(No Model.) 3 Sheets -Sheet 3.

A. R. YOUNG.

OAPSTAN.

No. 325,143. Patented Aug. 25, 1885.

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AUGUST S R. YOUNG, OF STILLXVATER, MINNESOTA.

CAPSTAN.

SEFECEFECATION forming part of Letters Patent No, 325,143, dated August 25, 1885.

(No model.)

To all whom it may concern:

Be it known that I, AUensTUs R. YOUNG, of Stillwater, in the county of \Vashington, and in the State of Minnesota, have invented certain new and useful Improvements in Gapstans; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, in which Figure 1 is a perspective view of my improved mechanism arranged for operation. Fig. 2 is a plan view of the upper side of the same, the covers for the pawlheads being removed to show the arrangement of parts within said heads. Fig. 3 is a like view of said mechanism from the lower side. Fig. 4 is a vertical section upon lines xxof Figs. 2 and 3. Fig. 5 is a perspective view of the inner faces of the toothed upper end of the barrel and the main pawthead separated from each other. Fig. 6 is a like view of the minor pawl-head and its loose pinion separated from each other and from their carrying-shaft.

Letters of like name and kind refer to like parts in each of the figures.

My invention relates to capstans in which, by a reversal of the motion of the drivingshaft, the winding-barrel is caused to rotate in the same direction with different velocities; and my invention consists, principally, in a capstan in which are combined,with the wind ingdrum, two shafts that are adapted to be simultaneously rotated in either direction, and, by means of clutch mechanism and gearing, substantially as described, to alternately engage with and rotate said drum with different velocities, but always in the same direction, as the direction of revolution of said shafts is reversed, substantially as and for the purpose hereinafter specified.

It consists, further, in a capstan in which are combined, with the Windingdrum, an aXi ally-journaled shaft that, when rotated in a forward direction, is adapted to engage with and revolve said drum forward; a second shaft which journals a loose pinion that meshes with peripheral teeth upon said drum, and is engaged by and moved with said shaft when the same is rotated in a backward direction, and means, substantially as shown, whereby said shafts may be simultaneously rotated forward or backward, substantially as and for the purpose hereinafter set forth.

It consists, further, in a capstan in which are combined the following elements, to wit:

a winding-drum that is provided with peripheral gear-teeth, a shaft which is journaled axially within said drum, and by means of clutch mechanism is adapted to engage with and rotatethe same when revolved in a forward direction; a second shaft that carries a loosely-jonrnaled pinion, which meshes with the peripheral teeth of said drum, and by means of clutch mechanism is engaged by and revolves with said shaft when the same is rotated in a backward direction, and means, substantially as shown, whereby said shafts may be simultaneously rotated in a forward or backward direction, substantially as and for the purpose hereinafter specified.

It consists, further, in the means employed for connecting the winding-barrel and loose pinion to or with their shafts, substantially as and for the purpose hereinafter shown.

It consists, further, in the means employed for locking the clutch-pawls out of position for engagement, substantially as and for the purpose hereinafter set forth.

It consists, finally, in the construct-ion and combination of parts, substantially as and for the purpose hereinafter shown and described.

In the annexed drawings, A represents a shaft. which is journaled vertically within a suitable frame, B, and upon its lower end has attached a gear-wheel, G, that meshes with and receives motion from a toothed wheel, D, upon a drivingshaft, E.

Upon the shaft A, above the frame'B, isjour naled a winding-drum, F, of usual form, upon the lower end of which is secured a gear-wheel, G, that has preferably a diameter considerably greater than the diameter of such portion of said drum. Upon or within the upper end of said drum are provided a number of ratchet-teeth, f, which are arranged concentrically, and upon the projecting end of said shaft is secured a head, H, that extends radially over said drum at such point, and has pivoted within suit-able rcesses, h, two or more pawls, h, which are adapted to engage with said teeth f when said shaft is revolved in a forward direction, and to trip and pass over the same when said shaft is turned backward.

Journaled within the frame B, at one side of the winding-drum F, is a shaft, I, which eX- tends a short distance above said frame, and has loosely journaled upon its projecting portion a pinion, K, that meshes with the gearwheel G at the lower end of said drum. Upon the upper end of said shaft is secured a head,

L, which is similar in construction to the head H, andis provided with two or more pawls, Z, that are adapted to engage with concentricallyarranged ratchet-teeth k, which are formed upon the upper face of the pinion K, which pawls and teeth are so arranged thatwhen said shaft is rotated in a rearward direction said pinion will be engaged and caused to move with the same, and will, through said gear-wheel G, cause said drum to revolve in a forward direction.

The shaft I is connected with the shaft A. by means of a third shaft, M, which carries a gear-wheel, N, and pinion O, a pinion, P, upon said shaft A,that meshes with said gear-wheel, and a pinion, Q, which meshes with said pinion 0, the arrangement being such that while said shafts A and I will simultaneously revolve in the same direction the latter will make but one revolution while the former is making several revolutions.

The operation of the mechanism is as follows, viz: When the driving-shaft E is rotated so as to drive the shaft A in a forward direction, the pawls h will engage with the teeth f of the drum F, while the pawls Z will trip over the teeth k of the pinion K, by which means said drum will be caused to revolve wit h said shaft A with a considerable velocity, and said pinion K will be rotated loosely upon its shaft by the gear-wheel G. By reversing the motion of said driving-shaft said pawls 71/ will trip over said teeth f, while said pawls Z will engage with said teeth 70, by which means said drum will be driven in the same direction as before through the shafts A, M, and I, (with their meshing pinions and gears,) and the pinion K and gear-wheel G, such motion being many times slower than when said drum is driven directly by said shaft A, and the power capable of being exerted by said drum correspondingly greater.

In order that the pawls h and Z may be raised from Contact with their engaging ratchet-teeth and locked in such raised position, the casing of each head H or L is made separate from the body or spider of the same, and is capable of being partially rotated in either direction upon such spider. Atasuitable point within each casing h or Z a stud, h or Z, respectively, projects radially inward beneath each pawl h or Z, and when such stud is at or near the pivotal end of said pawl it in no manner interferes with the action of the latter; but when by the partial rotation of its casing said stud is moved to the opposite free end of said pawl it raises and sustains said end out of contact with the ratchet-teeth be low, and thus prevents the engagement of the part to which said head is attached with the part having the ratchet-teeth.

The mechanism described is preferably operated by power, and in order to change the speed of the winding-drum it is only necessary that the motor should be reversed, movement in one direction giving to said drum a rapid rotation, while a movement of said motor in an opposite direction operates to give said drum a much slower rotation with a corresponding increase in power.

Having thus fully setforth the nature and merits of my invention, what I claim is 1. A capstan in which are combined with the winding-drum two shafts that are adapted to be simultaneously rotated in either direc tion, and by means of clutch mechanism and gearing, substantially as described, to alternately engage with and rotate said drum with different velocities, but always in the same direction, as the direction of revolution of said shafts is reversed, substantially as and for the purpose specified.

2. A capstan in which are combined with the winding-drum an axially-journaled shaft that when rotated in a forward direction is 7; adapted to engage with and revolve said drum forward, a second shaft which journals aloose pinion that meshes with peripheral teeth upon said drum, and is engaged by and moved with said shaft when the same is rotated in a backward direction, and means, substantially as shown, whereby said shafts may be simultaneously rotated forward or backward, substantially as and for the purpose set forth.

3. A capstan in which are combined the following elements, to wit: a winding-drum that is provided with peripheral gear-teeth, a shaft which is journaled axially within said drum, and by means of clutch mechanism is adapted to engage with and rotate the same when revolved in a forward direction, asecond shaft that carries a loosely-journaled pinion, which meshes with the peripheral teeth of said drum, and by means of clutch mechanism is engaged by and revolves with said shaft when the same is rotated in a backward direction, andmeans, substantially as shown, whereby said shafts may be simultaneously rotated in a forward or backward direction, sub stantially as and for the purpose specified.

4. As a means for connecting the shaft I with the winding-drum F,the pinion K, loosely journaled upon said shaft and provided with the ratchet-teeth 7c, the head L, secured upon said shaft and having the pivoted pawls Z, and the toothed wheel G, secured to said drum and meshing with said pinion, said parts being combined to operate substantially as and for the purpose set forth.

5. As a means for releasing the pawls h from and locking the same out of engagement with the ratchet-teeth f, the casing 7f, surrounding the head H and adapted to be partially rotated around the same, and the pins or studs 71;, which project from said casing radially inratohet-teeth 7c, and the heads H and L, having, respectively, the pivoted pawls h and Z, substantially as and for the purpose specified. ward beneath said pawls, said parts being In testimony that I claim the foregoing I 15 5 combined substantially as and for the purpose have hereunto set my hand this 16th day of shown and described. Maroh,18S5.

6. The hereinbefore-described capstan, in] which are combined the shafts A, E, I, and M, the gear-wheels O, D, G, and N, the pin- Vitnesses: 10 ions 0 and P, the drum F, having the ratchet- O. M. MOOLUER,

teeth f, the loose pinion K, provided with the XVM. M. MCCLUER.

AUGUSTUS R. YOUNG. 

